Improvement in stopping-mechanism for knitting-machine



waited tats yJOHN KENNEDY, oE C LAVE'RAC'K, NEW YORK.

Letters Patent N 94,218, dated August 31,1869.

IMPRovEMENT 1N STOPP'INGMECHANISM r'oR KNITTINGMACHINE.

The Schedule referred to in these Letters Patent and making part of the same.-

Be it known that I, JOHN KENNEDY, of the town of Claverack, in the county of Columbia, and State of New York, have invented a new and useful Stop-Device or Attachment to be applied to Rotary Knitting- Machines for preventing imperfections in the cloth or fabric made, and for preserving the needles; 'and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1. is a perspective vien' of my new stopdevice.

The object of my invention is to provide any rotary.

knitting-machine with an attachment or device which will promptly stop the same whenever the thread breaks or runs 01T the bobbin, or when any waste or Vother accumulationoccurs Von the thread, and thus prevent in'iperfections inthe knitted cloth, and preserve the needles from being broken.

To enable those skilled in the art to make and use my invention, I will proceed to describe its eonstrucl.

tion and operation.

I attach a horizontal shaft, A, to thev front of the frame of the knitting-machine, and on this Ashaft I place the ratchetwheel B, and a bevelled gear-wheel D', which last is loose on the shaft, so that it may be moved `back laterally thereon, and only revolves with it a be'velled gear-wheel, D, of same size as D', and which ordinarily works into it, and .revolves it and the shaft A, with no other effect; but, as soon as the thread breaks or runs ofi' the bobbin, the anchor or drop-hook b drops on to the ratcl'let-wheel B, or, in

-case of accumulations, knots, or kinks occurring on the yarn, the trip-lever F is thrown up and the catch or spur (1,011 spring C, is permitted to engage the same, and the revolution of the shaft A is stopped,

operates on the belt-shifter, stops the knittcr instantly whenever the thread breaks or runs off thebobbin, or

.At iight angles to this is another short shaft, with any accumulation, kink, or knot occurs that will not pass through the slotv in the tripping-lever F.

The belt-shifter is Isosensitive that a movement of lever g, to the distanceof a sixteenth of an inch, will shift the belt from the driving to the loose pulley,` and stop the machine.

The shaft of the bevel-gear wheel D is driven, by being connected with the main ordriving-wheel ofthe cylinder, or head of the knitter.

It frequently happens that yarn runs o the bobbin double' or in kinks, in either of which cases the latch ortripping-lever F is lifted, and the spur a, on spring C, allowed to fly up and catch in the ratchet B, and thus stop the machine before any needles -can be broken, or any imperfections made in the cloth.

So, too, if the thread breaks at any point outside' of the needles, or runs oi the-'bobbin, the slack of the thread e, caused thereby, allows the anchor or drophook b to engage the ratchet B,'and thus instantly stop themachine, as before described.v

The spiral spring c, encircling 'the shaft A behind the bevelled gear-wheel D', operates to restore said wheel instantly to its place, as often as it is thrown out or back by the teeth of wheel D.

rIhe brace f'is attached to the frame of the machine, and is designed to support the lever g.

The anchor or drop-hook b swings or moves freely on the pin or joint 7L.

Letter e represents the thread running off the bob- Ybin G, up through the slot in lever F, and the hole 'fi in the back spur of drop-hook b, and thence to the needles of the knitter.

While there is no accumulation on the yarn, and it does not break or run oli' the bobbin, nor double, nor kink, the tension of this thread keeps the hook b upand away from the ratchet B, passing, as it does, through the hole c', in 4its back-spur, which projects through a mortise'instandard E.

What I claim asmy invention, and desire to secure v by Letters Patent of the United States, is

The combination of the slotted tripping-lever F, spring O, bevelled gear-wheels I) D', ratchet B, drophook b, spring c, spur a., and forkedA lever g, when all are constructed and arranged andoperate as, or suhstantially as and for the purpose herein described.

` JOHN KENNEDY.

Witnesses ALEX. S. ROWLEY, It. H.-Mo1m1s. 

